Prosiectau fesul blwyddyn
Crynodeb
Miscanthus × giganteus is a source of platform chemicals and bioethanol through fermentation. Cinnamates in leaves and stems were analysed by LC–ESI-MSn. Free phenols were extracted and separated chromatographically. More than 20 hydroxycinnamates were identified by UV and LC–ESI-MSn. Comparative LC–MS studies on the leaf extract showed isomers of O-caffeoylquinic acid (3-CQA, 4-CQA and 5-CQA), O-feruloylquinic acid (3-FQA, 4-FQA and 5-FQA) and para-coumaroylquinic acid (3-pCoQA and 5-pCoQA). Excepting 3-pCoQA, all were also detected in stem. 5-CQA dominated in leaf; a mandelonitrile–caffeoylquinic acid dominated in stem. Three minor leaf components were distinguished by fragmentation patterns in a targetted MS2 experiment as dicaffeoylquinic acid isomers. Others (Mr 516) were tentatively identified as hexosylcaffeoyl-quinates. Three positional isomers of O-caffeoylshikimic acid were minor components. p-Hydroxybenzaldehyde was also a major component in stem. This is the first report of the hydroxycinnamic acid profile of leaves and stems of M. × giganteus.
Iaith wreiddiol | Saesneg |
---|---|
Tudalennau (o-i) | 2376-2384 |
Nifer y tudalennau | 9 |
Cyfnodolyn | Phytochemistry |
Cyfrol | 72 |
Rhif cyhoeddi | 18 |
Dyddiad ar-lein cynnar | 06 Medi 2011 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - 01 Rhag 2011 |
Ôl bys
Gweld gwybodaeth am bynciau ymchwil 'Isolation, identification and quantitation of hydroxycinnamic acid conjugates, potential platform chemicals, in the leaves and stems of Miscanthus × giganteus using LC–ESI-MSn'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.Prosiectau
- 2 Wedi Gorffen
-
Biorefining Centre of Excellence (BEACON)
Fish, S. A. (Prif Ymchwilydd) & Shah, I. P. (Cyd-ymchwilydd)
01 Ebr 2010 → 31 Maw 2015
Prosiect: Ymchwil a ariannwyd yn allanol
-
Regulation of polyphenolics and genetic manipulation of lignins in grasses
Donnison, I. (Prif Ymchwilydd), Allison, G. (Prif Ymchwilydd) & Bosch, M. (Prif Ymchwilydd)
Biotechnology and Biological Sciences Research Council
01 Ebr 2008 → 31 Maw 2012
Prosiect: Ymchwil a ariannwyd yn allanol